From 988d8ef298918656ad00c946cf85212e5e697307 Mon Sep 17 00:00:00 2001
From: "william.valenduc" <william.valenduc@epita.fr>
Date: Thu, 29 Jan 2026 11:29:03 +0000
Subject: [PATCH] feat(execution): update $PWD and $OLD_PWD

---
 src/execution/execution_helpers.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/execution/execution_helpers.c b/src/execution/execution_helpers.c
index 9dcaf41..8ea5aef 100644
--- a/src/execution/execution_helpers.c
+++ b/src/execution/execution_helpers.c
@@ -12,6 +12,7 @@
 #include "../expansion/expansion.h"
 #include "../utils/ast/ast.h"
 #include "../utils/hash_map/hash_map.h"
+#include "../utils/vars/vars.h"
 #include "execution.h"
 
 static char **list_to_argv(struct list *command_list)
@@ -36,7 +37,7 @@ static char **list_to_argv(struct list *command_list)
     return argv;
 }
 
-static int try_builtin(char **argv);
+static int try_builtin(char **argv, struct hash_map *vars);
 
 int exec_ast_command(struct ast_command *command, struct hash_map *vars)
 {
@@ -49,7 +50,7 @@ int exec_ast_command(struct ast_command *command, struct hash_map *vars)
         free(argv);
         return 0;
     }
-    int builtin_ret = try_builtin(argv);
+    int builtin_ret = try_builtin(argv, vars);
     if (builtin_ret != -1)
     {
         free(argv);
@@ -294,7 +295,7 @@ static int builtin_exit(char **argv)
     return exit_val;
 }
 
-static int builtin_cd(char **argv)
+static int builtin_cd(char **argv, struct hash_map *vars)
 {
     const char *path = argv[1];
     if (!path)
@@ -306,11 +307,15 @@ static int builtin_cd(char **argv)
             return 1;
         }
     }
+    // char *pwd = getcwd("", "");
+    char *pwd = get_var_or_env(pwd, "PWD");
     if (chdir(path) != 0)
     {
         perror("cd");
         return 1;
     }
+    set_var_copy(vars, "OLD_PWD", pwd);
+    set_var_copy(vars, "PWD", path);
     return 0;
 }
 
@@ -320,7 +325,7 @@ static int builtin_cd(char **argv)
  * @param argv Array of command arguments
  * @return int Exit status of the builtin command, or -1 if not a builtin
  */
-static int try_builtin(char **argv)
+static int try_builtin(char **argv, struct hash_map *vars)
 {
     if (!argv || !argv[0])
         return 0;
@@ -334,7 +339,7 @@ static int try_builtin(char **argv)
     if (strcmp(argv[0], "exit") == 0)
         return builtin_exit(argv);
     if (strcmp(argv[0], "cd") == 0)
-        return builtin_cd(argv);
+        return builtin_cd(argv, vars);
 
     return -1;
 }